Extech Instruments CTH10A User Manual

EXTECHINSTRUMENTS
4CTH10A‐en‐GB_V2.310/15
DailyAlarmSetting
 Press“MODE”button(B2)toviewtheAlarmTime,“AL”isshownonthedisplay.
 When viewing the Alarm Time, hold “MODE” button (B2) for 3 seconds to enter the
AlarmTimesettingmode.Press“+”(B3)or“‐”(B4)buttontoadjustthealarmtime.Press
the
“MODE”button(B2)toconfirmthesettingandmovetothenextsetting.
 Press“ALON/OFF”Button(B6)toactivateordeactivatethealarm.Ifthealarmison,the
alarmicon"
"appearsonthedisplay.
SnoozeAlarm
 Press the “SNOOZE” (B1) button when the alarm tone sounds. The alarm snoozes for
approx.5minutes,afterwhichtimeitalertsagain.“
”flashesontheLCDduringthe
snoozetime.Thisprocesscanberepeated7times.
 Except for the“SNOOZE” button,any button can be pressed to stop the snooze alarm.
Otherwise,thealarmsignalsoundsfor2minutes,thenstopsautomatically.
12/24HourDisplayMode
Pressthe“12/24”(B3)button toselectthe12or24hourmode.
ThermometerandRelativeHumidityDisplays
 TheCTH10Aincludesinternaltemperatureandrelativehumiditysensors.Temperature
andrelativehumiditymeasurementsaredisplayedonthelowerrightsideoftheclock.
 Pressthe“°C/°F”(B4)buttontoselectC:CelsiusorF:Fahrenheitunits.
 Ifthetemperatureexceedsthemeasurablerange,LL.L(beyondtheminimum

temperature)orHH.H(beyondthemaximumtemperature)willbeshownontheLCD.
ImportantNotes
 Theclocklosestimeinformationwhenthebatteriesareremoved.
 DonotexposetheClocktodirectsunlight,extremetemperatures,orhighhumidity
 Nevercleanthedeviceusingabrasiveorcorrosivematerialsorproducts. Useadamp
clothtowipethehousingcleanasnecessary.

Extech Instruments CTH10A Specifications

Temperature Measurement

temperature measurement range	0~50°C (32~122°F)
storage temperature	‐20~60°C (‐4~140°F)
temperature resolution	0.1°C or °F
temperature accuracy ‐5°C to 0°C	±1.5°C (±3°F)
temperature accuracy 1°C to 30°C	±1°C (±2°F)
temperature accuracy 31°C to 50°C	±3°F (±1.5°C)

Humidity Measurement

r.h. measurement range	20~99% Relative Humidity
r.h. accuracy 20% to 40% RH	±8% RH (@25°C)
r.h. accuracy 41% to 70% RH	±6% RH (@25°C)
r.h. accuracy 71% to 90% RH	±8% RH (@25°C)

Power

power supply	Three (3) ‘C’ type batteries

Weight and Dimensions

dimensions	29 x 43 x 3.8 cm (11.4 x 17 x 1.5 in.)
weight	1.25 kg (2.75 lbs.)